The light emitting device has a light emitting element 101, and translucent material 102 that passes incident light from the light emitting element 101 and emits that light to the outside. The sides of the translucent material 102 perimeter are inclined surfaces 107 that become wider from the upper surface to the lower surface. The area of the lower surface of the translucent material 102 is formed larger than the area of the upper surface of the light emitting element 101. The lower surface of the translucent material 102 and the upper surface of the light emitting element 101 are joined together, and the part of the lower surface of the translucent material 102 that is not joined with the light emitting element 101 and the inclined surfaces 101 are covered by light reflecting resin 103.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A light emitting device comprising: a light emitting element with an upper surface that is a light emitting surface; a translucent material with an upper surface and a lower surface, where light from the light emitting element is incident on the lower surface and light is emitted to an area outside the light emitting device through the upper surface; and a light reflecting resin that covers at least one part of the translucent material, wherein the translucent material includes a covered region that is covered with the reflecting resin and a non-covered region that is exposed to the area outside the light emitting device, wherein an area of the non-covered region on the upper surface of the translucent material is smaller than an area of the lower surface of the translucent material, wherein the area of the lower surface of the translucent material is larger than an area of the upper surface of the light emitting element, wherein the lower surface of the translucent material is joined to the upper surface of the light emitting element, and wherein a region of the lower surface of the translucent material that is not joined to the upper surface of the light emitting element is covered with the light reflecting resin.
A light emitting device consists of an LED (light emitting element) that shines light upwards. A translucent material (like plastic or glass) sits on top of the LED. Light from the LED goes into the translucent material, then comes out the top to light up the surrounding area. Reflective resin covers some of the translucent material to direct light. The top surface area of the translucent material is smaller than its bottom surface area, and the bottom surface is larger than the LED's top. The LED's top and translucent material's bottom are joined, but some of the translucent material's bottom sticks out beyond the LED and is covered by the reflective resin.
2. The light emitting device as claimed in claim 1 , wherein a first perimeter side region around the upper surface of the translucent material is recessed with respect to a second perimeter side region around the lower surface thereof.
The light emitting device, as described where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, and the exposed bottom of the translucent material covered by reflective resin, has a recessed perimeter on the top surface of the translucent material compared to the perimeter around the bottom surface. Imagine the top edge is set further inward than the bottom edge.
3. The light emitting device as claimed in claim 1 , wherein the translucent material has a recessed portion at a perimeter side region around the upper surface of the translucent material, and the recessed portion is filled with the light reflecting resin.
Building on the light emitting device described where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, and the exposed bottom of the translucent material covered by reflective resin, the translucent material has a recessed area around the top edge. This recessed area is filled with the light reflecting resin.
4. The light emitting device as claimed in claim 2 , wherein, in a plan view of the upper surface of the translucent material, the light reflecting resin around the upper surface of the translucent material is positioned inside the perimeter side region around the lower surface of the translucent material.
Considering the light emitting device which has an LED, a translucent material with light reflecting resin, a recessed top perimeter and larger bottom perimeter, the reflective resin around the translucent material's top surface is positioned inside the bottom perimeter when viewed from above. Essentially, the reflective resin on top doesn't extend beyond the bottom edge of the translucent material.
5. The light emitting device as claimed in claim 3 , wherein the translucent material has a protruding portion which protrudes outwardly away from the upper surface of the translucent material, and the protruding portion has an extending surface which extends outwardly from the side peripheral region around the upper surface and forms the recessed portion of the translucent material, and wherein the light reflecting resin is in contact with the extending surface of the protruding portion of the translucent material to fill the recessed portion.
Expanding on the light emitting device where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, the exposed bottom of the translucent material covered by reflective resin, and the translucent material has a recessed area at the top perimeter filled with reflective resin, the translucent material has a protruding section that extends outward from the top, creating a surface that forms the recessed area. The reflective resin touches this extending surface to fill in the recess.
6. The light emitting device as claimed in claim 5 , wherein the protruding portion of the translucent material is positioned under the reflecting resin filling the recessed portion of the translucent material.
In the light emitting device, which contains a protruding section extending from the top of the translucent material, creating the recessed area filled with light reflecting resin, the protruding portion of the translucent material is positioned underneath the reflecting resin that fills in the recessed area. This means the extension provides structural support and is hidden by the resin.
7. The light emitting device as claimed in claim 1 , wherein the upper surface and the lower surface of the translucent material are approximately parallel planar surfaces.
The light emitting device, as described where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, and the exposed bottom of the translucent material covered by reflective resin, has a translucent material whose top and bottom surfaces are essentially flat and parallel.
8. The light emitting device as claimed in claim 1 , wherein the upper surface of the translucent material is in approximately the same plane as the top of the light reflecting resin.
The light emitting device, as described where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, and the exposed bottom of the translucent material covered by reflective resin, is constructed so that the top surface of the translucent material is approximately level with the top surface of the reflective resin.
9. The light emitting device as claimed in claim 1 , wherein the lower surface of the translucent material has a bonded surface that is joined with the upper surface of the light emitting element, and an exposed surface that protrudes out from the bonded surface.
In the light emitting device, as described where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, a portion of the bottom of the translucent material is bonded to the LED, while another portion of the bottom is exposed and sticks out beyond the bonded area.
10. The light emitting device as claimed in claim 9 , wherein the area of the exposed surface is 10% to 100% of the area of the bonded surface.
Considering the light emitting device with the translucent material having a bonded surface and an exposed surface, the area of the exposed surface of the translucent material (that sticks out) is 10% to 100% of the area of the surface bonded to the LED.
11. The light emitting device as claimed in claim 1 , further comprising a substrate for mounting and holding the light emitting element and the light reflecting resin.
The light emitting device, as described where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, and the exposed bottom of the translucent material covered by reflective resin, also includes a substrate. This substrate is used to mount and hold both the LED and the light reflecting resin.
12. The light emitting device as claimed in claim 1 , wherein the translucent material includes fluorescent material.
In the light emitting device, as described where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, and the exposed bottom of the translucent material covered by reflective resin, the translucent material itself contains a fluorescent material, enabling it to change the color of the light emitted.
13. The light emitting device as claimed in claim 1 , wherein side surfaces of the light emitting element are covered by light reflecting resin.
In the light emitting device, as described where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, and the exposed bottom of the translucent material covered by reflective resin, the sides of the LED are also covered by light reflecting resin.
14. The light emitting device as claimed in claim 1 , wherein the light emitting element is provided with a pair of electrodes on a lower surface that is opposite to the upper light emitting surface.
This invention relates to light emitting devices, specifically addressing the challenge of efficiently extracting and directing light from a light emitting element while maintaining structural integrity and electrical connectivity. The device includes a light emitting element with an upper light emitting surface and a lower surface opposite to it. The lower surface is equipped with a pair of electrodes that facilitate electrical connection to the light emitting element. The electrodes are positioned to enable current flow through the element, activating light emission from the upper surface. The design ensures that the electrodes do not obstruct the light emission path, optimizing light extraction efficiency. The light emitting element may be a semiconductor-based structure, such as an LED or laser diode, where the electrodes are typically metal contacts deposited on the lower surface. The configuration allows for compact packaging while maintaining reliable electrical and thermal performance. The invention may also include additional layers or components, such as reflective coatings or heat dissipation structures, to further enhance light output and device longevity. The overall structure is designed to balance electrical conductivity, thermal management, and optical efficiency in a single integrated device.
15. The light emitting device as claimed in claim 1 , wherein the translucent material has a vertical surface on at least a part of a perimeter side region of the translucent material.
In the light emitting device, as described where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, and the exposed bottom of the translucent material covered by reflective resin, at least part of the perimeter of the translucent material has a vertical surface.
16. The light emitting device as claimed in claim 15 , wherein the vertical surface is contiguous to the upper surface of the translucent material.
In the light emitting device with a translucent material having a vertical surface on its perimeter, the vertical surface is directly connected to the upper (top) surface of the translucent material.
17. The light emitting device as claimed in claim 1 , wherein the vertical surface is contiguous to the lower surface of the translucent material.
In the light emitting device with a translucent material having a vertical surface on its perimeter, the vertical surface is directly connected to the lower (bottom) surface of the translucent material.
18. The light emitting device as claimed in claim 1 , wherein the translucent material has an inclined surface on at least a part of a perimeter side region of the translucent material.
In the light emitting device, as described where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, and the exposed bottom of the translucent material covered by reflective resin, at least a portion of the translucent material's perimeter has an angled or sloping (inclined) surface.
19. The light emitting device as claimed in claim 9 , wherein the translucent material includes fluorescent material.
In the light emitting device with the translucent material having a bonded surface and an exposed surface, the translucent material includes fluorescent material.
20. The light emitting device as claimed in claim 1 , further comprising an adhesive bond member that bonds an interface between the light emitting element and the translucent material, the adhesive bond member including fluorescent material.
The light emitting device, as described where a light emitting device comprises an LED, a translucent material that receives light from the LED and emits it outwards, and reflective resin covering part of the translucent material, which has a covered and uncovered region, a smaller top surface area than bottom, the bottom being larger than the LED, the bottom of the translucent material joined to the LED, and the exposed bottom of the translucent material covered by reflective resin, also contains an adhesive that joins the LED and translucent material. This adhesive includes fluorescent material.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
November 2, 2012
September 3, 2013
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